Lens holder



. f .UNITED'Y' STATES Patented July 10, 1923.

T OFFICE.

ARTHUR A. ARNOLD, on SOUTTTBRTDSE, MASSACHUSETTS. AssiGNon To AMERICAN OPTICAL coivrrAnY, or SOUTT'TBRTDGE, MASSACHUSETTS, A VOLUNTARY ASSOCIA- l Tron` or ivrAssACHUsnTTs.'`

` LENS HOLDER.

Applcatonlled October, 1916.\Sera1 No. 127,811.

-To 'whom/ 'may concern.'

. Be it known that I, ARTHUR A. Annone, a citizen `of the United States, residing at Southbridge, ,in the Acountyof Vorcester rand State ,of'Massachusetts', have invented 'certain newwand @useful Improvements in Lens Holders, ,ofwhich'y the following is a specilicationl ;y p i My invention relates to improvements in .cutters andhastparticulai' reference to an improved construction. of machine for readily cuttingl or forming a slot in the edge of an ophthalmiclens or the like.- One ofthe leading objects of my invention is` theprovision oa lnovel and im,- proved attachment `which may bey readily appliedito a rlens drillyor similar machine and i will enable saidjmachine vto be used in` edge slotting of lens`es.` 1

A further .objectof the invention resides in theprovision of. certain `novel and improved details of construction particularly adapted for use inconnection with my present device, although capable or' use in other forms of lens Slotters if desired.` i

Other objects andadvantages of my vimproved "construction should be readily'y apparent by reference tothe following speciiication taken in ,connection with` the Laccompanying drawings,v andfitwill be .understood that I` may make jany modiiications in the specific details bf constructionshown `and describedwithin thescope of the appended claims ,without vdeparting from `or exceeding the spirit of my invention. Figure I is aperspective view of my attachment applied '.to a well known form` of lens drill...- l

vFigure II is a perspective viewof `the face of my attachment with a lens in posi- `tion therein. 1- l i Figure I IAIHis a view of a` slightly modiflied construction. y i

f `Figure IV isa sectional view as on the -line IV--IV of Figure III. y i i In the drawings, the numeral ldesignates Athe drill base 'romwvwhich risesl a` standard `2, on which, is pivotally--mounted `the usual vlens clamping vmechanism 3, including the ,pair of jaws 4and-5j leach provided'with block rpinsv. Risin'gfrom the base 1 near -the jaws 4 andiy is the` drilll standard ,7

having slidably and rotatably mounted therein the spindle 8 driven as through the pulley 9 and adapted to be reciprocated by movement of the handle 10, a suitable stop screw ll being provided to limit the downward movement of the handle, while suitable means, such as a spring, notA shown, may be employed if desired to shift the spindle 8 into raised position. This improved attachment can be readily applied to any well known form of Vlens drill or similar'` machine, but for the purpose of clearly illustrating the application ofthe same to a lens drill it is shown in connection with a machine similar to that illustrated in the patent issued to George H. Day, No. 807,064, patented December 12,- 1905. i i l Ordinarily the spindle 8 has secured at the lower end thereof as by the clamp collar12 a suitable drillingpoint,` but when used for my Aimproved purposes I have yshown as substituted forthis drilling point the lspindle 13 bearing the slotting wheel 14. It will thus be seen that the wheel 14 may be readily substituted for the drilling :point as desired, and the horizontal position of the wheel 14 controlled by shifting of `the handle 10. i

guide rod 19, on which is slidably mounted the lug 20 and handle portion 21 formed on the plate 22, a spring 23 interposed between the lug 2O yand the block 24 secured on the guide rod 19 serving to force the plate`22 inward toward the pins `18. A second pair of pins 25 carried by the plate thus serves to securely clamp a'lens in exact centered position between the pairs .of pins, attention being called to the fact that the pins are shown `as centrally reduced, or of hour glass formation to securely engage the edge of the lens and prevent accidental lateral movement of the lens relative to my clamping device.

In the use of the form of construction just described it is merely necessary to clamp my device in position between the jaws and 5, and to then outwardly shift the plate 22 by grasping of its handle 21 and insert the lens between the pins `1S and 25; the lens having been placed in position the regular lens clamping mechanism 3 is swung about its pivotal support, namely the standard 2, to move the entire device, including the lens, aga-inst the cutting or slotting wheel 14 to cause the slotting of a lens.

It will be understood that it is preferable to keep the wheel la moistened during the slotting operation, and to best accomplish this result I may if desired secure to the standard 7 the sponge cup 26 having` a sponge, which will bear against the outer face and edge of the cutter 1i while the lens is in engagement therewith and keep it moistened. To control the moistening of the sponge I may place either on the standard 7 or on the bracket 17, a tank 27 having a discharge spout 28 adapted to convey moisture to the sponge cup, the iiow from the tank tothe sponge cup being controlled as by the plunger valve 29 so disposed as to be engaged in the form shown by the. bracket 17, or, if the tank is on the bracket 17, then to be engaged by the `standard 7 as the bracket is swung inward, whereby "the valve is automatically opened and feeds. liquid to the 'sponge cup while the parts are in operation and the llow of liquid is automatically shut oit as soon as the parts are shifted out of operative position.

In connection with the form just. described when it is desired to slot the lens at other than its exact center the position normally "occupied by the wheel 14, slotting below center may be accomplished by suitably adjusting` the stop screw 11 and holding the handle down thereagainst with the one hand while the device is swung with the other hand, this, permitting of slotting at any desired point along the edge of the lens within the range of movement of the cutter 14.

In Figure III, I have illustrated a slightly modified form of my invention, which may be used either with the foi-1n of drill illustrated or with other types of drills in which the lens holder is normally stationary,

and in which the feed is controlled by my device. .ably mount the yplate 22 on the bracket 17 In this form of 'invention I slidas previously described, 'but in 'place of -providing the pins 18 on 'the bracket 17 I make use of the Supplemen'tal 'slide 30 havvingthe pair of pins 18 actuated toward the pins 25 by the supplemental springs 31, the lens being thus securely clamped between the pins 18 and 25, but the pins 25 being the relatively stationary portion of the lens centering clamp. In this form of invention the spring 23 may serve as 1, feed spring to press the lens to be slotted airainst the wheel, in which form I preferably pivot to the block 24 the cont-rolling member 32 adapted to be engaged by the adjustable screw 33 carried by the handle 21', and in use the latchmember 32 is swung upward to engage the screw 33 which is adjusted till the edge of the lens just contacts with the edge of the cutter wheel 14, after which the latch is swung downward, when the spring tension will serve to shift the carriage inward toward the wheel, which `will cut the lens, until the stop screw comesin'to engagement with `the abutment block '24', limiting its inward movement and thus the slotting of the lens.

It is to be noted in connection with this form of my invention that I have illustrated two different methods of securing 'the vertical adjustment of the lens, andlikewise two means for securing itsangular adjustment, which nieansl arefcapable of joint or separate use. It is first to be noted that the supportingbracket .is .illustrated assplit to forni the parts '17 and .117 respectively, the part 17 bearing the rodif19 and `carriage, while the part 17 iis rigid with the attaching block 15. Th'eco'nnection between the parts 17 and 17" is 'such as to permit of relative vertical sliding of the parts as yadjusted by the screw 34, and at thesame time to permit of their relative 'notati-onto adjust the angular position of the lens.

In addition I may., if desired, 'form the 4block 17 with additional apertures 16 so arranged that ythe positioning pins 6 may 'be engaged in different pairs of apertures to control the height and also provide certain lateral apertures so that the entire device may be swung around in the jaws, las should be readily apparent by reference to Figure III. j j i In any event it will be noted that I have provided an improved device capable veither of permanent attachment to a suitable base adjacent a rotating arbor -`to 4car-ry the wheel or capable of temporary Iapplication to existing forms of lens drills, or other devices having a rotating spindle and which in either event will Iserve to satisfactorily hold or secure a `lens and assist in the desi-red vcorrect slotting of the lens.

I claim: e

A lens holder for use in slotting lenses, including -a base block providedY with inea-ns for attaching the same, a vbracket rising from 'the block andcar-rying -agguide'bar, va fstop rigidly lsecured yon the bar, a -le'ns "holding member, a guide lug carried by said holding member for `sliding movement on the bat. In testimony whereof I aix my signapins carried by the holding member for enture in the presence of two Witnesses. `gagging the lens, an actuating spring on the -bar intermedia-te the stop and the `holder 5 guide lug for inwardly actuating the holder, and means for predetermining the limit of: the inward movement of the holder.

ARTHUR A. ARNOLD. Witnesses EDITH M. `IIALvoRsErnl H. K. PARSENS. 

